JP2571466Y2 - Electrical junction box - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric junction box used for wiring in an automobile.

[0002]

2. Description of the Related Art Conventionally, an electric connection box used for wiring in an automobile has a plurality of blade type fuses F as shown in FIG.
In order to efficiently arrange the fuses in the fuse insertion portion 21 of the electric connection box 20, the longitudinal direction of each blade type fuse F
The so-called horizontal arrangement where a large number of cells are arranged in a row and arranged horizontally
Arranged in tandem, a wiring portion for wiring a predetermined circuit to each fuse from the input (output) side is provided inside the fuse insertion portion 21. This wiring part is usually
Although a wiring method using an electric wire or a bus bar is adopted, recently, a bus bar having excellent productivity and high electrical reliability has been frequently used.

The bus bar of the electric junction box 20 as described above
Is the same as the plate surface of the conductive metal plate A , as shown in FIG.
And a branching piece projecting and branching at right angles to the side edge of the plate A.
A projecting piece a projecting from the piece in parallel to the side edge of the plate is punched, and this projecting piece a is vertically bent upward from a position shown by a dotted line to form a bus bar 23 having a tab 24 as shown in FIG.
Form, given the bus bar 23 on the insulating substrate 22 arranged in a pattern, and stacked and stored the insulating substrate 22 in the interior of Hugh <br/>'s insertion portion 21 of the electric connection box 20, the bus bar 23 The blade type fuse F is configured to be electrically connected to the tab 24 via the intermediate connection terminal 25.

In addition, both upper and lower covers are interposed with an insulating substrate interposed therebetween.
In the upper bus bar and the lower bus bar laminated between,
In each case, the busbar width is the same as the busbar surface.
Projecting pieces that are approximately the same width as the
Tab, with the tip of the protruding piece bent upward
Provide a plurality of connection terminals.
Protruding from the connector insertion part of
Japanese Patent Application Laid-Open No. 2-303308, which is connected to a relay or the like.
Connection boxes are known.

[0005] In addition, the insertion direction intersects on both the front and back surfaces of the board portion.
Bus bar contact part where the elastic holding piece protrudes
Use the connection terminals that are
The vertical busbars and horizontal busbars
Crosses vertically up and down.
In the square hole of the intermediate insulating plate at the intersection,
Attach the bus bar that intersects both sides of this connection terminal
The actual bushing with a vertical busbar and a horizontal busbar fitted in the contact area 2-
Connection between bus bars in electrical junction box of No. 7718
The structure is known.

[0006]

Problems to be Solved by the Invention FIGS. 6 and 7 described above.
Using a bus bar 23 having a tab 24 shown in FIG.
The electrical connection box of FIG.
a is directly on the side edge of the plate A on the same plane as the plate surface of the conductive metal plate A.
It is formed by punching parallel to the plate side edge from the branch piece that branches into a corner.
Therefore, the pitch of the interval between the protruding pieces a, a
The width of the branch piece branching at a right angle from the side edge of the metal plate A and the side edge of the plate
Of the length of the protruding piece a parallel to
The pitch is not smaller than the total length, and the pitch P between the tabs 24 formed on the bus bar 23 shown in FIG.
１４14mm wide , so the blades laid horizontally
Even if you try to arrange many fuses F in a column, they will be arranged in a column
The spacing between each blade type fuse is 14mm.
Make sure that the distance between the columns of each blade type fuse is 10 mm or less.
Wiring in the car that is arranged in honey at the lower interval and miniaturized
Can not meet the demand for miniaturization of electrical junction boxes.
An electric junction box using such a bus bar has a blade type heat sink.
In order to arrange the fuses F densely in the horizontal column, the tabs 24 , 24 formed by bending the bus bar 23 as shown in FIG.
The tab spacing was small by projecting the 'tabs 24 of the bus bar which is arranged below the' lower layer dielectric substrate 22 between
Formed had been fitted with a blade-type fuse F, the between tabs 24 and 24 of the bus bar 23, the lower bus bar tab 2
'The is projected tab 24 of the lower bus bar <br/> over an insulating substrate 22 of the upper layer' 4 must be provided through port 22a for inserting a yet number of threads of the lamination number and the bus bars of the insulating substrate is a lot Do I not economy, further, the electrical junction box there is a problem such as the size of.

[0007] The electric connection box disclosed in the patent application is
Tab-shaped connection terminal of busbar and tab-shaped connection of other busbar
Since the connection terminals are not arranged to face each other,
Vehicles with blade-type fuses mounted side by side
It cannot be used for electrical junction boxes for internal wiring,
Considering the pitch of each tab-shaped connection terminal of the bar
The blade type fuses in a row
To meet demands for smaller electrical junction boxes
There is a problem that can not be.

An electric connection box disclosed in the utility model application disclosed above.
In the connection structure between the bus bars in the above, the connection terminals where the insertion directions of the bus bar contact portions intersect are mounted in the square holes of the intermediate insulating plate.
A vertical busbar that wears and crosses this busbar contact area
Blade type fuse because it is configured to insert a horizontal bus bar
Are placed in a horizontal column.
Not applicable.

[0009] The present invention solves the above-mentioned problems and provides a bus bar.
The pitch between tabs can be reduced to 10mm or less
Automotive wiring with blade-type fuses mounted horizontally and in tandem
Of the electrical junction box for
The number of stacked insulating boards and the number of busbars
Economical in-car wiring electricity that can be reduced
The purpose is to provide a junction box.

[0010]

Means for Solving the Problems To solve the above problems,
The electrical junction box according to the present invention has a fuse insertion portion 4 in which blade-type fuses F are arranged in a horizontal row, and the electrical junction box in which internal wiring is arranged only by a bus bar is electrically conductive metal.
The protruding piece formed by punching at right angles to the side edge of the plate
Bending directly to form a plurality of tabs 7 on the side edge of the bus bar plate
Bus bar 6 is used in plural, and one of the plural bus bars 6
Bus bar tab 7 of the other busbar and tab 7 of the other busbar.
In the electrical junction box so that they face each other at the
Set, and insertion opening of the upper upward blade receiving portion 8b plugged tabs f direction and blade fuses F of insertion opening downward blade receiving portion 8a of the lower side plugged to tab 7 of the bus bar
Orientation using a plurality of intermediate connection terminals 8 are perpendicular to the, the
The downward blade receiving portion 8a is
Insert the tabs 7 facing each other,
7 and 7, the intermediate connection terminal 8 on the upper blade receiving portion 8b
Fuse F with both tabs f, f inserted and connected
It is.

[0011]

[Action] double the protruding piece that is at right angles to punching to the side edges of the conductive metal plate is perpendicularly bent to form a tab 7 upwards
Number of bus bars 6 each one of the other bus bar
Tabs 7 and 7 are arranged facing each other at fuse insertion portion 4
Between the tabs formed on the side edges of the busbar plate
The interval is the same as the conventional bus bar shown in FIG.
The interval of the length of the protruding piece a parallel to the side edge of the
The pitch between the tabs can be reduced by the
Between tabs to keep the fuse mounting interval at 10mm or less
To meet the demand for miniaturization to keep the pitch P
It becomes possible to shift.

Further , in the fuse insertion portion 4,
When the pitch between the tabs is 10 mm or less,
Tabs 7, 7 facing each other, each under intermediate connection terminal 8
Orientation blade receiving portion 8a is inserted, and the
The blade-type fuse is attached to the upright blade receiving portion 8b
By inserting both tabs f, f of F, the fuse insertion part
4, the column spacing between many blade-type fuses is set to 1
It is possible to arrange and connect honey at intervals of 0 mm or less
In response to the demand for miniaturization of electrical junction boxes for wiring in automobiles
Can be

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing one embodiment of the present invention , and FIG.
FIG. 3 is an exploded view of the bus bar of the present invention , FIG. 3 is a perspective view showing the shape of the bus bar , and FIG.
4 shows the relationship between the inter-connection terminal and the blade type fuse. In the figure , 1 is an electrical junction box , 2 is an upper case, 3 is a lower case.
Part case.

[0014] 4 is a fuse insertion portion provided in the upper case 2, the fuse insertion portion 4 a number of blade fuses F of less than 10mm pitch (e.g. pitch 9m
m) so as to be arranged in a horizontal column.

[0015] 5 is a plurality of insulating substrates, the insulating substrate 5 bar bus bar 6 is arranged in a predetermined pattern, stacked inside the fuse insertion portion 4 (the upper case 2 and lower case 3) It is stored.

[0016] 6 is a bus bar disposed in front Symbol insulating substrate 5, tabs 7,7 of the bus bar 6, the tabs pitch P
Is less than 10 mm (for example, pitch 9 mm),
As shown in FIGS. 2 and 3, a protruding piece punched and formed at right angles to a side edge of the conductive metal plate is vertically bent upward.

[0017] 8 is an intermediate connection terminals, as shown in FIG. 4, below the lower of plug connection tabs 7 of the bus bar 6
Orientation blade receiving part 8a and tab f of blade type fuse F
An upwardly facing blade receiving portion 8b to be inserted and connected is provided. This
The lower blade receiving portion 8a on the lower side is an opening into which the tab 7 is inserted.
Is open downward, and the upper blade receiving portion 8b on the upper side is
The opening into which the bus f is inserted opens upward.
Insertion of each of the downward blade receiving portion 8a and the upward blade receiving portion 8b
The direction of the opening is orthogonal at an angle of about 90 °.
You. Using a plurality of these intermediate connection terminals 8,
The blade receiving portion 8a is connected to the bus
Insert each tab 7 and break it into the upper blade receiving portion 8b on the upper side.
By inserting the tab f of the fuse F
Tabs f and f of the lead type fuse F
Facing each other at the fuse insertion part 4 via the child 8
The respective tabs 7, 7 are electrically connected.

As described above , the pair of conductive metal plates A
The bus bar 6 having the tabs 7 formed by vertically bending the protruding pieces a formed by punching at right angles upwards,
Since the pitch P between them is 10 mm or less, it is suitable for a pitch of 10 mm or less between the blade-type fuses F, F arranged in tandem.
Combine. The tab 7 of the bus bar 6 and the tab f of the blade type fuse F are inserted and connected to the tab 7 of the bus bar 6.
Upward blade receiving portion 8b for inserting and connecting the direction of the insertion opening of the downward blade receiving portion 8a and the tab f of the blade type fuse F
By electrically connected through the intermediate connection terminals 8 insertion opening direction of perpendicular, Ru can be tightly connected to blade fuses F in the lateral置縦column. Therefore, FIG.
In order to arrange the blade type fuses densely in the horizontal and vertical columns as in the conventional example shown in (1), between the tabs formed by bending the busbars, a tab of another busbar arranged on the lower insulating substrate is provided.
It is not necessary to protrude, and the number of laminated insulating substrates and the number of bus bars arranged on the insulating substrate to be laminated in the electric connection box 1
And the electrical junction box is smaller .
You.

[0019]

[Effect of the Invention] As described above, the present invention is applied to the busbar plate side.
Bend the protruding piece formed at right angles to the edge upwards and tab
Formed between the tabs formed on the side edges of the busbar plate.
In response to the demand for miniaturization to keep the pitch to 10 mm or less
It becomes possible.

Also, they face each other at the fuse insertion portion.
Insert the downward blade receiving part of the intermediate connection terminal into each tab,
The upper insertion opening is
As both tabs of the blade type fuse are inserted, the busbar plate side
Tabs formed on the edge at an interval of 10 mm or less
Each busbar at the fuse insertion part facing the tab of
The spacing between the many bladed fuses
Can be attached to honey at intervals of 10 mm or less,
In response to the demand for downsizing electrical junction boxes for automotive wiring
It becomes possible to shift. In addition, the stacking inside the electrical junction box
Economical because fewer insulating boards and busbars are required
Become

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a development view of the bus bar of the present invention.

FIG. 3 is an enlarged perspective view showing the shape of a bus bar.

[Figure 4] This invention of Basubatabu the intermediate connection terminals and the brake
Exploded perspective view of the fuse

FIG. 5 is a perspective view showing a conventional electric junction box.

FIG. 6 is an exploded view of a conventional electric connection box bus bar.

FIG. 7 is a diagram showing a bus bar and a tab of a conventional electric junction box .

[Explanation of symbols]

1 electrical connection box 4 Fuse insertion part
5 Insulating board 6 Bus bar 7 Tab 8 Intermediate connection terminal 8a Downward blade receiving part
8b Upward blade holder F Blade type fuse f Tab A Conductive metal plate a Projecting piece

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-303308 (JP, A) JP-A-2-7718 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) H02G 3/16 H01R 31/06

Claims (1)

(57) [Scope of request for utility model registration] In an electric connection box having a fuse insertion portion for arranging blade-type fuses in horizontal and vertical columns, and arranging internal wiring only by a bus bar, the electric connection box is directly connected to a side edge of a conductive metal plate.
Bar by bending vertically protruding piece upwardly and punching the corner
Multiple bus bars with multiple tabs formed on the side edges of the sub bar
Used, a tab of one bus bar of the plurality of bus bars and
Attach the tab of the other bus bar at the fuse insertion part
And placed in the electrical junction box facing the
Direction of insertion opening of lower downward blade receiving part to be inserted into tab
Upward blade support for inserting the tab of the blade fuse
The intermediate connection terminal with the insertion opening
Using several pieces, the downward blade receiving part is attached to the fuse insertion part.
Into the tabs facing each other
On the upward-facing blade receiving part of the intermediate connection terminal on each tab
An electric connection box , wherein tabs of a fuse are inserted and connected .